Chattanooga, Tennessee, United States climate

Average temperatures, precipitation and all-time records for Chattanooga, Tennessee, United States, with every day graded against ~45 years of local climate history (1981–2026). Its warmest month is August, averaging a high of 89°F, and its coldest is January, with an average low of 28°F.

Chattanooga is a city in Hamilton County, Tennessee, United States, and its county seat. It is located along the Tennessee River and borders Georgia to the south. via Wikipedia

How today compares

Latest recorded day: 2026-07-21. Each reading placed on Chattanooga, Tennessee, United States's own ±7-day seasonal distribution.

High 95°F High · 84th pct

Low 74°F Very High · 97th pct

Feels-like 99°F Below Normal · 31st pct

Humidity 19.9 g/m³ Very High · 91st pct

Wind 10 mph Near Record · 99th pct

Precip 0.00 in Dry

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Chattanooga average temperatures by month

Typical daily high and low, and average precipitation, for each month in Chattanooga, Tennessee, United States, based on 1981–2026 records. The wettest month is January (0.20 in on an average day).

Month	Avg high	Avg low	Avg precip
January	45°F	28°F	0.20 in
February	52°F	32°F	0.20 in
March	59°F	38°F	0.20 in
April	68°F	46°F	0.10 in
May	76°F	56°F	0.10 in
June	84°F	64°F	0.10 in
July	89°F	68°F	0.10 in
August	89°F	67°F	0.10 in
September	84°F	61°F	0.10 in
October	72°F	49°F	0.10 in
November	60°F	38°F	0.10 in
December	50°F	32°F	0.20 in

Jan 14°–59°

Feb 21°–64°

Mar 26°–71°

Apr 35°–78°

May 45°–83°

Jun 57°–91°

Jul 64°–95°

Aug 61°–96°

Sep 52°–92°

Oct 38°–81°

Nov 26°–71°

Dec 22°–62°

Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -10°F to 115°F scale, so the whole year's rhythm reads at a glance.

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Record extremes

Hottest day on record: 106°F on 2012-06-29
Coldest day on record: -10°F on 1996-02-05

All Chattanooga weather records →

Percentiles compare each day to Chattanooga, Tennessee, United States's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →